Implement core value modals

app/create/utils/coreValueDetailsLocalStorage.ts

@@ -0,0 +1,57 @@
+import type { CoreValueDetailEntry } from "../types";
+
+/** Persists meaning/signals per chip id across refresh (esp. signed-in create flow, in-memory only). */
+export const CORE_VALUE_DETAILS_STORAGE_KEY =
+  "create-flow-core-value-details" as const;
+
+export function readCoreValueDetailsFromLocalStorage(): Record<
+  string,
+  CoreValueDetailEntry
+> {
+  if (typeof window === "undefined") return {};
+  try {
+    const raw = window.localStorage.getItem(CORE_VALUE_DETAILS_STORAGE_KEY);
+    if (!raw) return {};
+    const parsed = JSON.parse(raw) as unknown;
+    if (!parsed || typeof parsed !== "object") return {};
+    const out: Record<string, CoreValueDetailEntry> = {};
+    for (const [k, v] of Object.entries(parsed)) {
+      if (!v || typeof v !== "object") continue;
+      const o = v as Record<string, unknown>;
+      if (typeof o.meaning !== "string" || typeof o.signals !== "string") {
+        continue;
+      }
+      out[k] = { meaning: o.meaning, signals: o.signals };
+    }
+    return out;
+  } catch {
+    return {};
+  }
+}
+
+export function writeCoreValueDetailsToLocalStorage(
+  value: Record<string, CoreValueDetailEntry> | undefined,
+): void {
+  if (typeof window === "undefined") return;
+  try {
+    if (!value || Object.keys(value).length === 0) {
+      window.localStorage.removeItem(CORE_VALUE_DETAILS_STORAGE_KEY);
+      return;
+    }
+    window.localStorage.setItem(
+      CORE_VALUE_DETAILS_STORAGE_KEY,
+      JSON.stringify(value),
+    );
+  } catch {
+    // quota / private mode
+  }
+}
+
+export function clearCoreValueDetailsLocalStorage(): void {
+  if (typeof window === "undefined") return;
+  try {
+    window.localStorage.removeItem(CORE_VALUE_DETAILS_STORAGE_KEY);
+  } catch {
+    // ignore
+  }
+}